Would it be possible to change csf.pignore so that I can tell it to ignore the executable /bin/bash when it's from user stijn?
When i'm logged on with ssh I get these emails regularly, and the only possibility to stop them as far as I know is to add user:stijn or exe:/bin/bash to the list.
If i exclude /bin/bash I won't see notices for other people, and when I add my user, i won't receive any mails when my user account is compromised and someone is using it to run scanning tools.
This is the wrong forum to post your question, this forum is for Suggestions about improving CSF.
Any way, to answer your question, you don't need to psignore /bin/bash as it is already ignored because is part of the OS, but you can do a better way to ignore the process of your user doing the following:
exec: /home/stijn/public_html/exact_URL_of_the process_to_ignore.
Doing this, you will only be ignoring that particular process in one user.